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communication with nextion

I want to send specific think like (M105) from my Nextion display to Arduino Maga 2560 and the Arduino Echo to this Massage and send something i have defined it in the Arduino code like (temperature). 

I have tried  (wept) instruction and (repo) instruction but there are not echo from Arduino or in other word the nextion cannot understand the Arduino Echo.

print "M105/r"

wept 30,40


repo t0.txt,30


1 Comment

Nextion is doing exactly as told

 - is MCU following.   Not sure what an Arduino Echo is

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